TESTING/EIG/dget36.f(3) | Library Functions Manual | TESTING/EIG/dget36.f(3) |
NAME
TESTING/EIG/dget36.f
SYNOPSIS
Functions/Subroutines
subroutine dget36 (rmax, lmax, ninfo, knt, nin)
DGET36
Function/Subroutine Documentation
subroutine dget36 (double precision rmax, integer lmax, integer, dimension( 3 ) ninfo, integer knt, integer nin)
DGET36
Purpose:
DGET36 tests DTREXC, a routine for moving blocks (either 1 by 1 or 2 by 2) on the diagonal of a matrix in real Schur form. Thus, DLAEXC computes an orthogonal matrix Q such that Q' * T1 * Q = T2 and where one of the diagonal blocks of T1 (the one at row IFST) has been moved to position ILST. The test code verifies that the residual Q'*T1*Q-T2 is small, that T2 is in Schur form, and that the final position of the IFST block is ILST (within +-1). The test matrices are read from a file with logical unit number NIN.
Parameters
RMAX
RMAX is DOUBLE PRECISION Value of the largest test ratio.
LMAX
LMAX is INTEGER Example number where largest test ratio achieved.
NINFO
NINFO is INTEGER array, dimension (3) NINFO(J) is the number of examples where INFO=J.
KNT
KNT is INTEGER Total number of examples tested.
NIN
NIN is INTEGER Input logical unit number.
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Definition at line 87 of file dget36.f.
Author
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